DEPARTMENT OF STATE.

242 SUBMARINE WAKFABE.
man torpedo, but of a slightly different model, doubtless
a later model; but in every factory some details of construction
are maintained from one model to another and
preserve a characteristic appearance.
We have numbered the most noteworthy fragments
from 1 to 6.
1. Screw bolt.—We found in the German torpedo No.
1804 the same screw bolt amongst the screw bolts of the
head of the torpedo, with the same marking (K. Kopf,
head) and the same number (6). It is the most characteristic
piece.
The commission does not know of any other Navy
than the German Navy in which the screw bolts of the
different removable parts of the torpedo are marked
with a serial number. The mark No. 6 K. stamped on
piece No. 1 indicates without doubt that it refers to the
screw bolt No. 6 of the head of a German torpedo.
The commission adds to the fragments submitted to
its examination the screw bolt No. 6 of the cone of the
torpedo No. 1804 (longitudinal screw bolt), and as an
example of the methods of marking the screw bolt No. 2
of the head of the same torpedo.
2 and 3. Valve chest.—The screw thread was identified
with that of the screw plugs of the valve chest of the
German torpedo No. 1804; the differences which exist
between pieces Nos. 2 and 3 and the corresponding parts
of the torpedo No. 1804 may arise from differences in
the model of the torpedo.
4 and 5. Bottom and sides of the cylinder.—The form,
the curves, and the thickness are very nearly the same as
those of the corresponding pieces of the torpedo No. 1804.
In any case they are certainly fragments of the cylinder
of the motor of an automobile torpedo.
6. Fragment of a casing.—One of the screws which
fitted into it has been lost. The fragment is rather formless;
nevertheless it corresponds well, as far as construction
is concerned, and particularly as far as means of
fixing is concerned, to engine-room casing of the motor.
To sum up:
Piece No. 1 is doubtless the bolt screw No. 6 of the
head of a German torpedo: pieces 2 and 3 are probably
fragments of the valve c.iest of an automobile torpedo;
note that the threading is identical with that of the seat
of the plugs of the valve chest of the German torpedo
No. 1804.
Pieces 4 and 5 are certainly fragments of the bottom
and the walls of the cylinder of the motor of an automobile
torpedo, which can be found in the German
torpedo No. 1804.
Piece No. 6 can not be definitely located; nevertheless,
in thickness, aspect, and the screw holes which are found
in it, it corresponds Well with part of the casing of the
engine.
With the exception of the three fragments of sheet
iron all the other unnumbered debris seem to originate
from an automobile torpedo.
The commission adds to its present report a plan of
the engine of the German torpedo No 1804, on which it
has marked the probable origin of fragments Nos. 2, 3, 4,
and 5.
The members of the commission:
DUPONT.
STKOOH.
The Naval Commander,
President:
AMIOT.